Plumber&#39;s melting-pot.



V No. 781,193.'v PATENTBD JAN.`31, 1905.

` C.4 DWYBR.

PLUMBBR'S MBLTING POT.

APPLICATION FILED MAR.. 14. 1904.

Patenten January 31, 1905. A

li/YFENT OFFICE.

l CORNELIUS DWYER, or AMSTERDAM, NEW YORK.

PLUMBEBS MELTlNG-POT.

SPECIFICATION forming part of Letters Patent No. 781,193, dated January31, 1905.

Application filed March 1A, 1904. Serial No. 198,058.

T0 all whom t Magnan/cern:

Be it known that I, CORNEIJIISDWYER, a citizen of the United States,residing at Amsterdam, county of Montgomery, and State of New York, haveinvented certain new and useful Improvements in Plumbers Melting-Pots,of which the following is a specification.

The invention relates to such improvements;

and it consists of the novel construction and combination of partshereinafter described and subsequently claimed.'

Reference may be had to the accompanying drawings, and the referencecharacters marked thereon, which form a part of this specification. v

Similarrcharacters refer to similar parts in the several figures. v

Figure l of the drawings is a centralvertical section of a plumberssolder-pot embodying this invention. Fig. 2 is a top plan view of thesame with the handle partly broken away. Fig. 3 is acentral verticallongitudinal section of a ladle embodying the invention.

The object of the invention is to avoid the confusion and loss due tothe accidental ordesigned removal of pot-pieces of solder or lead from aplumbers pot or other vessel adapted to contain molten lead or solder. y

Lead and 4solder for use in plumbing are ordinarily melted in an ironpot, from wh-ich such quantities of the molten metal are removed as arerequired at the time, the remainder being allowed to cool in the form ofa pot-piece formed in the bottom of the vessel. Such potpieces areeasily. displaced or removed from the vessels heretofore employed formelting such metals, and the loss by theft and otherwise of suchpot-pieces has been suered with-' out remedy by employing plumbers. Evenwithout theft much loss is occasioned, due to the fact that it is almostimpossible for perproviding the containing vessels with distinguishing-marks to indicate the metal intended to be contained therein itis possible with ordinary care to prevent mistakes due to the mixture ofsuchvmetals or tothe substitution of one for the other.

In carrying out the invention the interior of the containing vessel isprovided with undercutor overhanging portions, whereby the potpiece issecurely interlocked with the vessel-wall.

. In Figs. 1 and 2 is shown an ordinary form of plumbers solder-pot 1,which in accordance with this invention has been provided with a groove2, formed in its inner wall near the bottom of the pot, vso as toproduce undercut or overhanging portions of the wall adapted tointerlock with a pot-piece. formed bythe hardening of molten metalpermitted to remain inthe Vessel until cooled below fusing temperature.Any desired number of such grooves may be employed, and they may beextended wholly or only partly around the interior of the pot. A row ofshort grooves 3 is shown just above the continuous groove 2 in Figs. land 2. In Fig. 1 the handle 4 of the y potl is vshown provided with theldistinguishing-marks S O L D E R to indicate the contents of the pot.

As a means to prevent the loss or improper mixture of very smallpot-pieces, too small tobe held by the undercut portions of thepot-wall, the bottom of the pot may be formed with either raised orsunken characters, adapted to form upon the bottom of the pot-piece,however small, reversely-molded characters indicating the. nature of themetal for which the vesselis intended. Thus the pot shown in Figs. l and2 being formed with the inverted characters S O L D E R sunken in itsbottom will form said characters in proper position upon the bottomofthepotpiece to indicate that said pot-piece is solder, so that if thepot-piece should become sepa-l rated from the pot it could notbemistaken for metal different from that indicated' by said characters.The molded characters thus formed upon the potpiece by interlocking withthe corresponding depressed portions of the pot-bottom serve also toprevent a/'rotative movement of the pot-piece,'which if permitted ICOmight make it possible to remove from the pot l the pot-piece ii it wereso small that comparatively little of its periphery extended beneath theoverhanging portions of the pot-Wall.

In Fig. 3 is shown a ladle 5, having inwardly-projecting lugs 6, whichform overhanging or undercut portions, whereby the pot-piece Will beretained in substantially the same manner as by the construction shownin the other iigures and above described.

What I claim as new, and desire to secure by Letters Patent, is-

1. A vessel for containing molten metal having interior undercutportions adapted to interlock with a pot-piece formed by the hardeningof the contained metal.

2. A vessel for containing molten metal having near its bottom interiorundercut portions adapted to interlock with a pot-piece formed by thehardening of the contained metal, and having in its bottom charactersformed by irregularities in its bottom surface adapted to form upon thebottom of a potpiece molded characters whereby rotation oi the pot-pieceis prevented.

In testimony whereoiI I have hereunto set my hand this 1st day ot'March, 1904.

CORNELIUS DlV YER.

Witnesses:

M. J. OSULLIVAN, J. W. QUIGLnY.

